Solar flares on April 20, 2025
The most powerful solar flare in 24 hours
M1.0 (strong) flare - April 20 at 7:11 AM
Solar activity index
Value as of the end of the day on April 20, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 19, 2025 to April 20, 2025
Time zone — UTC-05 (San Antonio) — summer time
List of solar flares for April 20, 2025
The total number of solar flares of class C and higher — 6 flares
C class — 5 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.9 | 19:10 | 19:31 | 19:54 | 4064 |
| C4.3 | 12:02 | 12:18 | 12:34 | 4063 |
| C1.7 | 11:23 | 11:28 | 11:33 | 4064 |
| M1.0 | 06:37 | 07:11 | 07:59 | 4068 |
| C2.2 | 02:50 | 02:57 | 03:06 | 4068 |
| C2.0 | 01:20 | 01:23 | 01:26 | 4065 |